Pterygodermatites (Mesopectines) valladaresi n. sp., female, scanning electron microscopy. (A) General view of prevulvar region; (B) cephalic extremity, lateral view; (C) vulvar region; (D) detail of vulvar region showing the presence of numerous papillae; (E) detail of the oral opening; (F) posterior extremity. *, internal circle of 6 labial papillae; A, anus; am, amphid; d, deirid; dT, dorsal oesophageal tooth; ep, excretory pore; lvT, lateroventral oesophageal teeth; od, oral denticles; V, vulva.